一个温度可诱导的蛋白质模块,用于控制哺乳动物细胞命运
William Benman1, Zikang Huang1, Pavan Iyengar2
1Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, 19104, USA.
bioRxiv : the preprint server for biology
|March 11, 2024
概括
研究人员开发了Melt,一种由温度控制的新型蛋白质开关. 这种热遗传工具能够对哺乳动物细胞中的细胞过程进行精确,可逆的控制,并显示出对体内应用的希望.
科学领域:
- 生物技术是生物技术.
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 可诱导蛋白质开关提供按需控制,但往往缺乏时空精度或在光学密集的环境中受到限制.
- 目前的方法在复杂的生物组织和生物体中难以精确控制.
研究的目的:
- 引入一种新的蛋白质模块Melt,用于使用温度对细胞功能的精确,可逆和时空控制.
- 为了证明Melt在各种生物应用中的多功能性和可调性.
主要方法:
- 开发了Melt (通过温度进行膜局部化) 蛋白质模块,该模块根据温度在单质 (细胞质) 和寡质 (膜结合) 状态之间转移.
- 设计具有可调节开关点的Melt变体,以便在哺乳动物细胞耐受的温度范围内工作.
- 将Melt融合到各种细胞组件中,以控制信号传输,蛋白质溶解,核穿,细胞骨重组和细胞死亡.
主要成果:
- 融可逆地在细胞质和血局部之间切换,在几分钟内发生微小的温度变化 (例如,原始变体的28-32°C).
- 梅尔特通过简单的端到端融合来控制多种细胞过程,证明了模块化.
- 可调节的变种允许精确的热控制分子电路在37-41°C范围内,和融介导的癌细胞死亡的热控制被显示在一个小鼠模型.
结论:
- 融化是一种多功能发热模块,可以直接,非侵入性地,时间空间控制哺乳动物细胞.
- 它的温度诱导和可逆性为生物技术和生物医学的应用提供了广泛的潜力,包括体内研究.
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